docker build

bash-4.3$ docker build -t flask-sample-one:latest .
Sending build context to Docker daemon  7.68 kB
Step 1/8 : FROM alpine:3.5
3.5: Pulling from library/alpine
Digest: sha256:dfbd4a3a8ebca874ebd2474f044a0b33600d4523d03b0df76e5c5986cb02d7e8
Status: Downloaded newer image for alpine:3.5
 ---> 88e169ea8f46
Step 2/8 : RUN apk add --update py2-pip
 ---> Running in c8a166e0f65b
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.5/community/x86_64/APKINDEX.tar.gz
(1/12) Installing libbz2 (1.0.6-r5)
(2/12) Installing expat (2.2.0-r0)
(3/12) Installing libffi (3.2.1-r2)
(4/12) Installing gdbm (1.12-r0)
(5/12) Installing ncurses-terminfo-base (6.0-r7)
(6/12) Installing ncurses-terminfo (6.0-r7)
(7/12) Installing ncurses-libs (6.0-r7)
(8/12) Installing readline (6.3.008-r4)
(9/12) Installing sqlite-libs (3.15.2-r0)
(10/12) Installing python2 (2.7.13-r0)
(11/12) Installing py-setuptools (29.0.1-r0)
(12/12) Installing py2-pip (9.0.0-r1)
Executing busybox-1.25.1-r0.trigger
OK: 61 MiB in 23 packages
 ---> b8ba243e655c
Removing intermediate container c8a166e0f65b
Step 3/8 : COPY requirements.txt /usr/src/app/
 ---> 6e8f6d8df316
Removing intermediate container b9894f1e8fa5
Step 4/8 : RUN pip install --no-cache-dir -r /usr/src/app/requirements.txt
 ---> Running in 1186b1bb6f13
Collecting Flask==0.10.1 (from -r /usr/src/app/requirements.txt (line 1))
  Downloading Flask-0.10.1.tar.gz (544kB)
Collecting Werkzeug>=0.7 (from Flask==0.10.1->-r /usr/src/app/requirements.txt (line 1))
  Downloading Werkzeug-0.11.15-py2.py3-none-any.whl (307kB)
Collecting Jinja2>=2.4 (from Flask==0.10.1->-r /usr/src/app/requirements.txt (line 1))
  Downloading Jinja2-2.9.5-py2.py3-none-any.whl (340kB)
Collecting itsdangerous>=0.21 (from Flask==0.10.1->-r /usr/src/app/requirements.txt (line 1))
  Downloading itsdangerous-0.24.tar.gz (46kB)
Collecting MarkupSafe>=0.23 (from Jinja2>=2.4->Flask==0.10.1->-r /usr/src/app/requirements.txt (line 1))
  Downloading MarkupSafe-0.23.tar.gz
Installing collected packages: Werkzeug, MarkupSafe, Jinja2, itsdangerous, Flask
  Running setup.py install for MarkupSafe: started
    Running setup.py install for MarkupSafe: finished with status 'done'
  Running setup.py install for itsdangerous: started
    Running setup.py install for itsdangerous: finished with status 'done'
  Running setup.py install for Flask: started
    Running setup.py install for Flask: finished with status 'done'
Successfully installed Flask-0.10.1 Jinja2-2.9.5 MarkupSafe-0.23 Werkzeug-0.11.15 itsdangerous-0.24
You are using pip version 9.0.0, however version 9.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
 ---> 8dfc3d1c6f66
Removing intermediate container 1186b1bb6f13
Step 5/8 : COPY app.py /usr/src/app/
 ---> cbb47f493e2d
Removing intermediate container 411dba43a9bc
Step 6/8 : COPY templates/index.html /usr/src/app/templates/
 ---> c4159356769c
Removing intermediate container fd9269bac1c2
Step 7/8 : EXPOSE 5000
 ---> Running in db1963d9962c
 ---> 7b82b78488b1
Removing intermediate container db1963d9962c
Step 8/8 : CMD python /usr/src/app/app.py
 ---> Running in dbf98a7f8149
 ---> 625a4601910a
Removing intermediate container dbf98a7f8149
Successfully built 625a4601910a
bash-4.3$